Application Notes

Скачать »Application Notes, PDF, 58 Кб, Версия: A, 12-04-2013Driving Large LCDs with LCD Peripheral of the MSP430 (Rev. A)The 4xx family of MSP430в„ў devices has two different types of integrated LCD drivers, namely the LCD controller and the LCD_A controller.The 6xx family of MSP430 devices also has two different types of integrated LCD drivers, namely the LCD_B controller and the LCD_C controller.This application report focuses on the LCD controller, but the principles shown here apply to all versions.The

Скачать »Application Notes, PDF, 341 Кб, 24-03-2008Three-Phase Electronic Watt-Hour Meter Design Using MSP430This application report describes the implementation of a three-phase electronic electricity meter using MSP430 4xx family of microcontrollers. The implemented functions are RMS voltage for each phase, RMS current for each phase, frequency, power, and a real-time clock (RTC).

Скачать »Application Notes, PDF, 127 Кб, Версия: A, 12-04-2013Use of Two MSP430s to Enhance Segment Lines for Larger LCDs (Rev. A)This application report explains a technique that uses two MSP430в„ў microcontrollers to expand the maximum number of LCD segments that can be driven with a single controller. Additional benefits of the technique include increases in available memory, data storage (RAM), and I/O control lines. These benefits are realized without the need for an external LCD driver circuit. The use of a second

Скачать »Application Notes, PDF, 195 Кб, Версия: A, 04-10-2001Implementing a Direct Thermocouple Interface With MSP430x4xx and ADS1240 (Rev. A)This application report describes and shows how to implement a direct thermocouple interface, without using the signal conditioning circuitry normally required for thermocouples. The thermocouple interfaces directly to the Burr Brown ADS1240, 24-bit ADC from Texas Instruments, Inc. An MSP430F41x ultralow-power microcontroller is used to communicate with the ADC, read the conversion values, convert

Скачать »Application Notes, PDF, 596 Кб, 16-05-2012MSP430 Embedded Application Binary InterfaceThis document is a specification for the ELF-based Embedded Application Binary Interface (EABI) for the MSP430 family of processors from Texas Instruments. The EABI defines the low-level interface between programs, program components, and the execution environment, including the operating system if one is present. Components of the EABI include calling conventions, data layout and addressing conve

Скачать »Application Notes, PDF, 1.2 Мб, 10-10-2003MSP430 Isolated FET InterfaceThis application report describes how to build an isolated FET interface for the MSP430 Flash Emulation Tool (FET). When developing and debugging line-powered MSP430applications such as motor control, electricity energy meters, power monitoring systems etc. it is important to have electrical isolation for the development tool such that the personnel involved and the connected electronic equipmen

Скачать »Application Notes, PDF, 228 Кб, 31-05-2006Spread-Spectrum Clock Source Using an MSP430While spread-spectrum clocking has long since been used in processor and memory clock trees, there are many other clocked systems, such as power supplies or switch-mode amplifiers, that continue to use a single-frequency clock. This can, in turn, generate significant EMI and can make meeting governmental regulations for EMI challenging. These regulations typically set a limit on peak energy within

Скачать »Application Notes, PDF, 91 Кб, 12-10-1999Economic Voltage Measurement With the MSP430 FamilyThis application report describes voltage and current measurement methods using the MSP430 universal timer/port module. The report explains the two measurement methods (charge and discharge) and shows how to measure voltage and current. The equations for the calculations are also given. Further sections show additional applications such as the measurement of two voltage inputs, bridge arrangem

Скачать »Application Notes, PDF, 233 Кб, 01-10-1997Generation and Recognition of DTMF Signals With the Microcontroller MSP430The first part of the Application Report describes the generation of DTMF signals using the Microcontroller MSP430. Following an explanation of the most important specifications which are involved, the theoretical and mathematical processes will be discussed with which sinusoidal waveforms can be derived from square-wave signals, by making use of appropriate analog filters. Tested examples of soft

Скачать »Application Notes, PDF, 306 Кб, 30-06-2004Choosing an Ultra Low-Power MCUThis application report describes how to compare ultralow-power MCUs. It discusses the key differences between popular low-power MCUs and how to interpret features and specifications and apply them to application requirements.

Скачать »Application Notes, PDF, 49 Кб, 18-10-2000Simple 1.5 V Boost Converter for MSP430A simple, efficient, low-cost, boost converter to take 1.5 V from a single type-AA alkaline battery to the operating voltage required by the MSP430 family of ultralow-power microcontrollers is described. Expected battery life is up to 1000 hours.

Скачать »Application Notes, PDF, 110 Кб, 14-12-1998FSK Modulation and Demodulation With the Microcontroller MSP430This application report describes a software program for performing V.23 FSK modem transceiver functions using an MSP430 microcontroller. It makes use of novel filter architecture to perform DSP functions on a processor with only shift and add capabilities.

Скачать »Application Notes, PDF, 220 Кб, 13-09-2006Wave Digital Filtering Using the MSP430Digital filtering is an integral part of many digital signal processing algorithms. Digital filters are characterized as either recursive [infinite impulse response (IIR)] or non-recursive [finite impulse response (FIR)] filters. IIR filters require a smaller order for the same set of specifications compared to FIR filters, while FIR filters provide a linear phase property. However, IIR filters, i

Скачать »Application Notes, PDF, 125 Кб, 04-11-2004CRC Implementation with MSP430Cyclic Redundancy Code (CRC) is commonly used to determine the correctness of a data transmission or storage. This application note presents a solution to compute 16-bit and 32-bit CRCs on the ultra low-power TI MSP430 microcontroller for the bitwise algorithm (low memory, low cost) and the table-based algorithm (low MIPS, low power). Both algorithms are presented in C and MSP430 assembly. Test co

Скачать »Application Notes, PDF, 168 Кб, 28-02-2002Mixing C and Assembler with the MSP430This application note describes how C and assembler code can be used together within an MSP430 application. The combination of C and assembler benefits the designer by providing the power of a high-level language as well as the speed, efficiency, and low-level control of assembler.

Скачать »Application Notes, PDF, 39 Кб, 13-10-2006Random Number Generation Using the MSP430Many applications require the generation of random numbers. These random numbers are useful for applications such as communication protocols, cryptography, and device individualization.Generating random numbers often requires the use of expensive dedicated hardware. Using the two independent clocks available on the MSP430F2xx family of devices, it is possible to generate random numbers without s

Скачать »Application Notes, PDF, 44 Кб, 16-11-2000Interfacing the MSP430 and TLC549/1549 A/D ConvertersThis application report describes how to interface an MSP430 mixed-signal microcontroller with the TLC549 and TLV1549 3-volt A/D converters. This report is written for the MSP430x11x(1) family, but can be adapted to any MSP430 derivative.

Скачать »Application Notes, PDF, 770 Кб, 16-01-2008MSP430 Capacitive Single-Touch Sensor Design GuideThis application report discusses the design of RC-type capacitive single-touch sensors using the MSP430 microcontroller. The MSP430 has some unique features that make it suitable for interfacing with capacitive-touch sensors. The RC-type method does not need special peripherals and can be implemented with all devices in the MSP430 product family. This method is also inherently low power and can

Скачать »Application Notes, PDF, 62 Кб, Версия: A, 17-07-2006MSP430 Software Coding Techniques (Rev. A)This application report covers software techniques and topics of interest to all MSP430 programmers. The first part of the document discusses the MSP430 standard interrupt-based code flow model, recommended for the vast majority of applications. The next part discusses a handful of techniques that should be considered by any developer that sets out to develop an MSP430 application. Using these met

Скачать »Application Notes, PDF, 128 Кб, 29-09-1999MSP430 SMBusThis application report describes a software implementation of the system management bus (SMBus) for the MSP430 microcontroller. It includes all master protocols, an interrupt-driven slave, and master usage examples. SMBus is derived from the I2C and is commonly used in smart batteries and other system devices.

Скачать »Application Notes, PDF, 171 Кб, Версия: A, 14-04-2008MSP430 Flash Memory Characteristics (Rev. A)Flash memory is a widely used, reliable, and flexible nonvolatile memory to store software code and data in a microcontroller. Failing to handle the flash according to data-sheet specifications may result in unreliable operation of the application. This application report explains the physics behind these specifications and also gives recommendations for correct MSP430 flash handling. All examples

Скачать »Application Notes, PDF, 458 Кб, Версия: A, 14-06-2010Tiny DCDC Converter Reference Design (Rev. A)This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 3.6 V to 6 V with the primary design objective to minimize solution size as well as to maintain high efficiency and long battery life.

Скачать »Application Notes, PDF, 475 Кб, 27-03-2008Understanding MSP430 Flash Data RetentionThe MSP430 family of microcontrollers, as part of its broad portfolio, offers both read-only memory (ROM)-based and flash-based devices. Understanding the MSP430 flash is extremely important for efficient, robust, and reliable system design. Data retention is one of the key aspects to flash reliability. In this application report, data retention for the MSP430 flash is discussed in detail and the

Скачать »Application Notes, PDF, 134 Кб, 20-02-2002Implementing An Ultralow-Power Keypad Interface with MSP430Often in applications with keypads, the condition can occur where a key can be held or stuck down, causing excess current consmption and reducing the battery life of a battery-operated product. This application report shows a solution. The keypad interface in this report, based on the MSP430, draws .1uA while waiting for a key press, is completely interrupt driven requring no polling, and consum

Скачать »Application Notes, PDF, 421 Кб, 01-10-2002Interfacing the 3-V MSP430 to 5-V CircuitsThe interfacing of the 3-V MSP430x1xx and MSP430x4xx microcontroller families to circuits with a supply of 5 V or higher is shown. Input, output and I/O interfaces are given and explained. Worse-case design equations are provided, where necessary. Some simple power supplies generating both voltages are shown, too.

Скачать »Application Notes, PDF, 95 Кб, 29-03-2007Efficient MSP430 Code Synthesis for an FIR FilterDigital filtering can be easily accomplished on the MSP430 using efficient multiplication. The tool accompanying this document automatically converts FIR filter coefficients to MSP430 assembly code that can be used in any application. HornerвЂ™s method and CSD format is used to accomplish the efficient multiply operations. The performance of the filter on the MSP430 is shown by evaluating the gain a

Скачать »Application Notes, PDF, 121 Кб, Версия: A, 14-06-2010Boost DC/DC with Ultra-Low Shutdown Current (Rev. A)This reference design is presented to help application designers and others who are trying to use the MSP430 in a system that requires a very low input voltage range while also maintaining high efficiency. Battery life is extended as well as a result of the low quiescent current (5 mA) and ultra-low shutdown current (5 nA) of the TPS61097-33. This particular design allows for an input voltage betw

Скачать »Application Notes, PDF, 961 Кб, Версия: B, 14-06-20101.8V вЂ“ 5.5V Input, High-Efficiency DCDC Converter Reference Design for MSP430 (Rev. B)This reference design is presented to help application designers and others who are trying to use the MSP430 in a system with an input voltage in the range of 1.8 V to 5.5 V, and who must increase the application run time by making use of the complete battery voltage range while still maintaining high efficiency over the entire battery life.

Скачать »Application Notes, PDF, 426 Кб, Версия: D, 18-07-2017MSP430 32-kHz Crystal Oscillators (Rev. D)Selection of the right crystal, correct load circuit, and proper board layout are important for a stable crystal oscillator. This application report summarizes crystal oscillator function and explains the parameters to select the correct crystal for ultra-low-power operation of an MSP430в„ў MCU. In addition, hints and examples for correct board layout are given. The document also contains detailed i

Скачать »Application Notes, PDF, 460 Кб, Версия: A, 17-03-2009AES128 вЂ“ A C Implementation for Encryption and Decryption (Rev. A)This application report describes the AES algorithm and the use of a suggested C implementation for AES encryption and decryption with MSP430.Note: This document may be subject to the export control policies of the local government.

Скачать »Application Notes, PDF, 37 Кб, Версия: A, 19-05-2003Using the TPS3619 with MSP430 Microcontrollers Can Reduce Sys Power Consumption (Rev. A)The MSP430 series of microcontrollers are ideal in applications where battery life is critical. These microcontollers require only 0.1?A of current in low-power RAM retention mode; In this mode the microcontroller must have power to retain volatile memory. In some systems with charge pumps, the TPS3619 can be used to shut down the charge pump, saving system power consumption.

Скачать »Application Notes, PDF, 475 Кб, 05-10-2012Design Considerations When Using the MSP430 Graphics LibraryLCDs are a growing commodity in todays market with products as diverse as children's toys to medical devices. Modern LCDs, along with the graphics displayed on them, are growing in complexity. A graphics library can simplify and accelerate development while creating the desired user experience. TI provides the MSP430 Graphics Library for use in developing products with the MSP430в„ў MCU. This

Скачать »Application Notes, PDF, 520 Кб, 07-12-2015ESD Diode Current SpecificationThis document explains the maximum ESD diode current specified for GPIO on MSP microcontrollers. Sometimes signals on specific pins exceed the supply of the MSP MCU. In such a case, the device can handle this overvoltage condition through the ESD diodes, but the ESD diode specification must be considered during application design. The items to be considered are described in this document.

Скачать »Application Notes, PDF, 752 Кб, 07-12-2015MSP Code Protection FeaturesMSP microcontrollers (MCUs) offer a number of features to help control code accessibility in the device, to add different layers of code access management and protection strategies. These include features that can lock or password protect the JTAG/SBW access, IP Encapsulation (IPE) to isolate sensitive code with different permissions than the rest of the program, and bootloader (BSL) access featur